Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f46379c3b5767972ac6a5ab90921ad3a8f68563e56de13c13aa348c9cc262182' 
  AND token = 'mj0p79ro2wCT6Xs/EulWG8zA9J95PGUUP6hq5yYOQEA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}